20420452

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{5531}}^1$

素因数の和:5619

約数の個数: 24

約数和(自身を含む): 39033792

約数和(自身を除く): 18613340

約数列:

[1, 2, 4, 13, 26, 52, 71, 142, 284, 923, 1846, 3692, 5531, 11062, 22124, 71903, 143806, 287612, 392701, 785402, 1570804, 5105113, 10210226, 20420452]

約数ペア:

[(1, 20420452), (2, 10210226), (4, 5105113), (13, 1570804), (26, 785402), (52, 392701), (71, 287612), (142, 143806), (284, 71903), (923, 22124), (1846, 11062), (3692, 5531)]